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高一英语人教版必修3学案：新知预习UNIT4ASTRONOMYTHESCIENCEOFTHESTARSWORD版含解析.doc

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Unit4Astronomy:thescienceofthestars 新知预习 一、词汇扫描 根据句意及各题括号中所给的汉语意思,从下面的方框中选取合适的单词或词组,用其适当的形式填空。 combineviolentexplodeharmfulscientificallyskillmultiplydisappointpickoutpublishdevelopmentspreadpresencegraduallymasstelescopefloatexistsystemoxygen1.Hewascalminthe_________(出席；到场)ofdanger. 2.Now,thepriceofthericeis_________(逐渐地)rising. 3.Whenareyougoingto_________(出版)thisworksofyours? 4.Tomum’s_________(失望)，herchildfailedintheexam. 5.Thenewsthattsunamiscausedmorethan100,000deaths_________(传播)throughouttheworldinashorttime. 6.Severaldaysago,abomb_________(爆炸)neartheshop,killing10persons. 7.Theyhada_________(激烈的)quarreloverDave’sdrinking. 8.Therehavebeenseveralnew_________(发展)inelec-tronics. 9.Whatdoweproducewhenwe_________(化合)copperandiron? 10.Whatdowemeanwhenwesaywearestudyingasubject_________(科学地)? 11.Whatarethemostimportant_________(技巧)ifweneedtoberealscientists? 12.Eight_________(乘)bytwoissixteen. 13.Agreat_________(大量的)ofrockshadfallenfromthecliffandnowblockedtheroad. 14.Thesocial_________(制度)needstobeimproved. 15.Mancan’tlivewithoutwaterand_________(氧气). 16.Please_________(挑选出)threemoresentencesfromthereadingpassagewithsubjectclauses. 17.Smokingis_________(有害的)tohealth. 18.Anastronomerobservesthespacethrough_________(望远镜). 19.Wood_________(漂浮)onwater. 20.Don’tbesilly.Suchathingdoesn’t_________(存在). 答案: 1.presence2.gradually3.publish4.disappointment5.spread6.exploded7.violent8.developments9.combine10.scientifically11.skills12.multiplied13.mass14.system15.oxygen16.pickout17.harmful18.telescope19.floats20.exist 二、句型聚焦 观察下列句子,试着归纳其画线部分所包含的句型结构。 1.Thatmadeitpossibleforlifetobegintodevelop. ___________________________ 2.Theyproducedyounggenerallybylayingeggs. ___________________________ 3.Sowefeelasifthereisnogravityatall. ___________________________ 4.…butitwillnotbeasstrongapullastheearth’s. ___________________________ 答案:1.it在此句中充当形式宾语，真正的宾语是不定式“tobegintodevelop”。 2.by表方式，后加名词、代词或动名词。 3.asif/though似乎；好像；仿佛。 4.as+adj.+a/an+n.(单数可数名词)=such+a/an+adj.+n.(单数可数名词)。 三、语法平台 观